Names
- Livingston, Edward, 1764-1836.1
- Long, John Davis, 1838-1915.1
- Lubin, Isador, 1896-1
- Lubin, Isador, 1896-1978.1
- Lyons, Richard Bickerton Lyons, Earl, 1817-1887.1
- Mabie, Hamilton Wright, 1845-1916.1
- Machen, J. Bernard.1
- Macomb, Alexander, 1782-1841.1
- Madison, James, 1751-1836.1
- Malmesbury, James Howard Harris, Earl of, 1807-1889.1
- Manhattan Project (U.S.)1
- Marcy, William Learned, 1786-1857.1
- Margry, Pierre, 1818-1894.1
- Marshall, George C. (George Catlett), 1880-19591
- Marshall, George C. (George Catlett), 1880-1959.1
- Martin, Joseph William, 1884-1968.1
- Mason, James Murray, 1798-1871.1
- Mason, John Young, 1799-1859.1
- Mason, Stevens Thomson, 1811-1843.1
- Mathews, William Smythe Babcock, 1837-1912.1